Oil-burner apparatus



Oct. 22, 1929. T. KEENAN OIL BURNER APPARATUS Filed Feb 3,

Patented @et 22, 1929 'Ara OFFICE THOMAS KVEENAN, OF BROOKLYN ,'I" EWYORKyASSIGNOR 0F ONE-HALF TO WALTER A. lTRAUTH, OF BROOKLYN, NEW YORKOIL-BURNER APPARATUS Application ineaA reti-ilary 3, 1927. serial No.165,520.

rlhis invention relates to oil burners, and particularly to apparatus ofthis class designed for use in connection with furnaces of various kindsand classes for the generation ofV heat for transmission through theheating apparatus of which the furnace constitutes a part; and theobject of theinvention is to provide an apparatus of the class specifiedcomprising a fuel oil storage tank, and means involving vcontrol andregulating devices in communication with said tank and positionedbetween the same and the burner for controlling and regulating thetransmission of fuel oil to the burner; a further obj ect being toprovidemeans for siphoning the oil from the storage tank into one of theregulating devices, and further to the provision of means `for soundingan alarm when the level of oil in the storage tankassumes apredetermined position; a further object being to provide means forcontrollingthe valve or valves employed in the regulators for shuttinglolf the supply lof fuel oil thereto and to the burner, should either oneor both of the regulators fail to function; a further object being toprovide means vfor shutting off the transmission of oil from the supplytank tothe system in the event of a fire'adjacent said tank; a furtherobject being to provide means for discharging fuel o'il from one of theregulato-rs employed on the valves controlling the supply of oil to suchregulator as fails to perform its function; a still further obj ectvbeing to provide a burner having a [flared annular discharge flo-w, andmeans for maintaining a level' of oil substantially at the base of theliow, and said burner being also provided with a 'removable lining orfacing for the oil chamber of the burner whereby carbon deposits may beremoved by the removal of said lining or facing; and with these andother objects in view, the invention consists in an apparatus of theclass and for the purpose specified, which is simple in construe# tion,efficient in use, and which is constructed and operated as hereinaftervdescribed and claimed.

The invention is fully disclosed in `the following specification, ofwhich theaccompanying drawing forms a part,in which the separate partsof my improvement are designated by suitable reference characters ineach of the views, and in which:

F ig. 1 :is a diagramamtic view of an apparatus made according to myinvention, parts of the construction being broken away and shown insection; and, y

Fig. 2 is asectional plan of the oil burner shown in Fig. 1, the sectionbeing o-n the line 2 2 of F ig. l.

In the drawing, 1 represents a storage tank for fuel oil indicated at 2,the oil being admitted into thetank through a feed tube 3 havingaclosure cap 4. A vent tube 5 is also coupled with the upper portion Aofthe tank and is exposed to atmosphere. Pivotally mounted in connectionwith a support '6, arranged in the tank 1 at one end' thereof as seen at7, is a lever 8, the link arm of which 'carries a lioat 9. Connectedwith the short Vthe gage Vcasing and insulated from and adapted to beengaged by another contact 17 on the gear 14 to complete an electriccircuit 18 having a source of electrical'supply 19 to sound a bell orother signal device 20, a one-wire grounded circuit being employed.

A siphon tube 21 extends tothe lower portion of the tank 1'Y and opensoutwardly through the top thereof in a valve casing 22,

the spring pressed valve 23 of which is nor.-

mally held in raised position by a fuse link 24 arranged above the valvecasing 2.1 and eX- posed to the compartment in which the tank 1 ismounted. Suitable packing 25 is employed around the stem of the valve 23to prevent the leaking of cil. Coupled with the valve casing 22 is adischarge pipe' 26 which opens into. thetop of a regulator 27 through avalve 28. The regulator 27, in the construction shown,

comprises a casing, in the top of which is mounted a diaphragm 29adapted to act-nate a needle valve 30 for controlling the admission ofoil into the regulator 27 after passing thro ugh the valve 23, thediaphragm 29 form-Y ing a vchamber 31 in the top ot' the casing, whichchamber is placed in communication with a chamber 32 at the bottom ofthe casing through a passage 33 extending along one'side wall of thecasing.

The oil passes from the chamber 32 into the float chamber 34 of thecasing 4through a passage controlled by a weighted needle valve 35normally held in raised position by the weight of the `float 36 in theIchamber 34 upon a number of detents 37. lt will be `understood thatwhen the level of oil in the chamber 34 reaches a predeterminedposition, the -fioat will be raised and the valve '35 allowed to drop by.gravity Ito shut off the supply of oil to 'the chamber 34. Thisoperation is also facilitated in the engagement of the upper end of thefloat 36 with the diaphragm 29 to close the valve, thus stopping ltheadmission of oil into the chamber 3l.

I alsoY provide the regulator 27 with `an overflow safety discharge inthe form of a U-tu'be 38, Va-djustaloly support-ed in an upwardlydirected 'tubular extension 39 of the regulator 27', said `Utube beingheld in different positions of adjustment rby the nut 40 of a stuffingbox which .also serves to seal .the connection between the tubeand theextension 39.A The extension 39 is placed in communication with thechamber l34 as seen at 4l, and

a plug V42 is provided .at the lower end of the'extensionito clean outthe passage whenever desired. The upper end of the pipe 26 where it`entends downwardly into the regulater 27 'is provi-ded with ;a priming.plug 26a whereby the pipe 26 may be filledV to provide for the properSiphon functioning ofthe discharge of the cil from the y"tank l.

Coupled with the lower endof the regulator 27 and in communication withvthe chamber-34 thereof is a pipe 43 in which .is mounted a strainer 44.rlhis ypigpe is in connnunication with a valve casing 45 coupled with asupplementalregulator 46. A valve 47 of the casing 45 is-of the quickthread needle'type, and the stem of the val-ve extendsthrough the cas.-ing and is provided with .a weighted lever 4S held -in suspended.position by a .fusible link 49 wl ereby Vin the event of `a lire around.the regulatorl 46, the fusible vlink 49 will be broken, allowing theweighted lever to drop to rotate a valve 47 to move the same into closedposition .to shut off Vthe supply vof fuel oil to the regulator 46.

The transmission of oil into the chamber .50"at the lower end of theregulator 46 is controlledbya spring pressed ball valve51. The'transmission of oi-l from the chamber 50 into the .floatchamber 52 ofthe regulator 46 is controlled by a needle valve 53 which is nor- Inallyheld in raised position by weighted detents 54 pivotally mounted in theupper end of the chamber 52 and engagingI a collar 55 on the stem of thevalve and moved into closed position in the upward movement of the lioat56 which engages and actuates said detents. 'The Valve 53 may also be'held in closed position by the weight of the float 56 Aresting upon acollar A57 at the lower end of the stem of the valve.

The valve 53 extends through the upper end ofthe regulator 46 and iscoupled with one end of a lever 58 pivoted to the regulator as seen at59. Pivoted to the other end of the lever is a rod 60 which extendsoutwardly through a tubular portion 6l arranged above the spring pressedAball valve 5l, and adapted to engage said ball valve to move the sameinto inoperative position to allow for the transmission of oil into thechamber 50.

A discharge pipe 62 is in communication with the chamber 52 and extendsto an oil burner 63 which is adapted to be mounted in a furnace of anykind or class and which may be supported upon the grate 'bars 64 of thefurnace. A valve 65 is mounted in the pipe 62 to control the supply ofoi'l to the burner, and said valve iscontrol'led and regulated by achain 66 coupled with the damper diaphragm 'or with an automatict'hermostatic regulator commonly employed vin apparatus of the classunder consideration. The valve 65 is adapted to control the volume ofoil transmitted to theburner 163. A reduction 'block 67 is alsopreferably employed in the pipe 62 'between the valve 65 and burner 63to prevent sudden discharge of oil into the burner, especially in theinitial lstarting of its'operation.

The burner, in the construction shown, comprises a cylindrical casing 68having an extension 69 at one side thereof which opens outwardly through.the front of the furnace to allow for lthe transmission of air intotheburner, the oil pipe 62 passing through the extension 69. Supportedwithin the casing 6 8 is ran annular oil reservoir 70 with which thepipe 62 couplesias seen :1t/7l, and the upper end of this reservoiropens through the top of the burner in a discharge throat having aflared Vouter wall 17 2 and flared yinner wall 73, the inner wall beingof ,greater height ,than the outer wall. YThe rair admitted into thecasing 68 passes at lthe inner and outer sides of the Vreservoir 70through the .chambers 74 and *on the inner and outer sides of saidreservoir. The air passing through the inner chamber 75 strikes -adome-shaped baille 76 which .encircles J[he upper edge of the innerflared wall 73, and deflects the air downwardly from said inner wall tothe discharge throat of .the reservoir 70, while the va'ir Apassingthrough the Aouter chamber 74 is deflected inwardlyby an inturned flange77, after passing through apertures V78. The flame of the llt) burner,when in operation, extends upwardly through an annular passage 7 9 whichencircles the baffle 7 6 within the flange 77.

l also preferably mount within the reservoir of the-burner, an annularlining ring or facing member which is U-shaped in forni in crosssection, and the lower end of which is perforated to allow for thepassage .of oil into the reservoir. The member 80 is provided with twoor more rivets 8l bridging the walls thereof to facilitate the insertionand removal of vsaid member at will. The

member 80 is designed to collect whatevery carbon may be created in theoperation of the burner, and facilitates the removal of such carbonwhenever it is desired or deemed necessary. The member 80 is movablethrough the annular passage 79 as will be understood. It is preferredthat the level of oil be maintained on the lines 82 with relation to theburner as well as the regulators 27 and 46, it being understood thatsaid devices will be installed to maintain this level,

which is controlled by the float 56 in the regulator 46 and the float 36in the regulator1 27 and also by the safety overflow tube 381,

The operation of my improved apparatus will be readily understood fromthe foregoing description when taken in connection with the accompanyingdrawing and the following statement. In the initial starting of theapparat-us, it will be understood that oil will be placed in the tubes21 and the pipe 26bymeans of the priming plug 26EL and oil placed in thetank l. The valve 28 will then be opened to allow for the transmissionof oil into the regulators 27 and 46 and thus into the burner until thedesired level of oil has been maintained in the burner, at which timethe automatic valves in the separate regulators will be actuated tomaintain such level of oil until the burner has been ignited or put intooperation. A torch or other means is employed for starting the burneroperation to provide the necessary heat for the baffle and othersurrounding walls of the burner adjacent the discharge 7 9. lVhen theburner is put into operation and the oil isv ignited, as the oil isconsumed, the automatic valves of the regulators 26 and 46 will operateto replenish the supply of oil to the burner and maintain asubstantially fixed f level of oil therein at all times during theburner operation. Should, by any chance, one or more of the controlvalves of the regulator 27 fail to function to shut off the suo lY ofoil thus causing an overflow in l l a a the chamber 34, it will beunderstood that such overflow of oil will be discharged through the tube38 positioned slightly above the normal level of oil to be maintained inthe chamber 84, and this oil may be transmitted to a suitable containerin any desired manner. It will also be understood that the valve 65 willbe raised and lowered in the furnace operation to maintain the desiredsupply of With this construction, it will a ered to control the oilsupply to the burner,

the valve 69-LL is correspondingly operatedto control and regulate theair admission to the burner. i n

lt will be understood that while I have shown certain' details of lconstruction for carrying my invention into effect, that I am notnecessarily limited to these details, nor to the particular arrangementof the devices or mechanisms herein shown and described, and variouschanges in and modifications of the construction hereinset out may bemade within the scope of the appended claims without departing from thespirit of my invention or sacriiicingits advantages.

The bottom of the burner is also preferably provided with an aperture63a which may placing said passage in communication withy the chamberwithin the' casing, a valve controlling said port, the stem of saidvalve proi jecting through one end of the casing, a float actuated bythe level of liquid in the casing and in operative connection with saidvalve for moving the same into position to closesaid port when apredetermined level of liquid has been reached in the chamber of saidcasing, a liquid discharge in communication with said` casing at a pointbelow the level of liquid therein, a valve for controlling theadmissionof liquid into the feed passage, and means in operative connection withthe protruding end of'said valve stem for controlling the operation ofsaid last named valve whereby the closing of the lirst named valve willpermit of the closing of said second named valve` 2. A regulator of thevclass deseribed'comprising a casing, a. liquid feed passage traversingthe lower end of said casing, a port placing said passage inycommunication with the' chamber withinthe casing, a valve con- CTLtrolling said port, the stem of said valve projecting through one end ofthe casing, a float actuated by the level of liquid in the casing and inoperative connection with said valve for moving vthe same into positionto close said port when a predetermined level of liquid has been reachedin the chamber of said casing, a liquid discharge in communication withsaid casing at a point below they level of liquid therein, a valve forcontrolling the admission of liquid into the feed passage, means inoperative connection with the protruding end of said valve stem forcontrolling the operation of said last named valve whereby the Closingofthe first named valve will permit of the closing of said second namedvalve, and a needle valve outwardly of the second named valve andcontrolling the feed of liquid to said feed passage and through thesecond named valve.

3. A regulator of the class described comprising a tubular casing, achamber in said casing, a discharge in communication with said chambersubstantially centrally thereof, an intake port opening into the lowerend portion of said chamber, a valve controlling said port, a float insaid chamber and in operative connection with said valve to move thestem into closed positionin the upward movement of the float in saidchamber, a passage in communication with said intake port, a valvecontrolling said passage, and means involving` a plunger rod supportedexternally of the casing and a lever coupled withv said rod and the stemof said rst named valve, for controlling the opening and-closing of thesecond namedv valve.

4. A regulator of the class described comprising a tubular casing, achamber in said casing, a discharge in communication with said chambersubstantially centrally thereof, an intake port opening into the lowerend portion of said chamber, a valve controlling said port, a iioat insaid chamber and in operative connection with said valve to move thestem into closed position in the upward movement of the float in saidchamber, a passage in communication with said intake port, a valvecontrolling said passage, means involving a plunger rod supportedexternally of the casing and a lever coupled with said rod and the stemof said first named valve for controlling the opening and closing of thesecond named valve, and a needle valve for regulatingthe flow of fuel tothe second named valve and said passage.

5. A regulator of the class described comprising a chamber into andthrough which a liquid is adapted to pass, an inlet passage forsupplying liquid to said chamber, a discharge communicating with theAcentral portion of thechamber, means involving two independent valves,one arranged within the chamber and the other externally thereof forcontrolling the supply of liquid' to said chamber

